04 td4 not starting. Could be hp fuel pump ? fault P1195

Hey guys. So recently acquired 2004 freelander td4 hse ( at a very fair price

However i am now broken down..

I am wondering if it's the high pressure fuel pump before a put an order in as they don't come in cheap.

I'll give a little run down of events leading to it and then a diagnostic.

Was heading off on an 9 hour drive.
2 hours in i stop at a gas station and when i went to start car she would crank but wouldn't start. Tried cranking her a couple of times and eventually got it going.

Drove an other 2 hours and stopped again this time she would crank but wouldn't start. Got my hands on some starter fluid and after a couple of tries she reluctantly started up.

Drove an other hour or so and shortly after i put the cruise control on I started to lose power ( could be unrelated to cruise control )

She then died and left.me stranded on the side of the highway. Tried some starter fluid again but this time she just wouldn't start. Eventually got towed to nearest Diesel mechanic.

Now from what we tested and diagnosed.

The fuel pump behind rh wheel seems to activate although it doesn't sound like a clean flow.

Did injector test and barely any fuel is going to injectors about 20 milliliters out of all 4

Clean fuel is coming out of Fuel Injector Spill Return Pipe. Although not sure of the flow.

I have fault code p1195 Rail pressure control valve

Mechanic says he's best bet is to remove high pressure fuel pump and recondition it.

What do you guys think ?

Could it be the high pressure fuel pump ?
fuel pressure sensor?

Any advice would be helpful.

Cheers.

The HP pumps themselves don't give to many problems.

I imagine the ECU is not seeing much pressure - this can be for a number of reasons...

1) The small rubber seals in the pressure regulator solenoid attached to the HP pump fail, this means pressure can not build up. There's various reports of that on here and advice for replacing them - I think there are 2 or 3 little O ring rubber seals - withdraw the solenoid, replace seals on outside of it and replace.
2) The harness to the pressure sensor connector on the rail can corrode and give no/wrong/spurious readings to the ECU. There is a replacement/upgraded part available, you can probably find its part number searching on here. Alternatively, the poor connections can maybe be cleaned.
3) The pump in the wheel arch may not be supplying sufficient fuel/pressure and the ECU has put things in preservation mode to prevent failure.

I'm not a TD4 owner, these are issues I've seen going through the forum, so pleas excuse any inaccuracies in the descriptions.

Most of these can be checked from diagnosis - for example what pressure readings the ECU is seeing for the low and high pressure sensors. Once again, there are 'expected' values on here in different places, a search should find them. There is obviously a fault somewhere, likely one of the 3 points above, the ECU is detecting this and may be protecting the engine from damage - eg if low pressure is not high enough, it won't create high pressure (allow the HP pump to create it) or if the high pressure is not sufficient, won't open the injectors.

Given your error code, the obvious place to start is the harness connector to the pressure sensor on the rail.

Good luck.

From what I've said, I think you can gather that I don't think there's any point removing the HP pump - but your mechanic is with the car so may have his reasons for thinking it does (other than the size of the bill he'll present to you).

Bigboy04 said:

I have fault code p1195 Rail pressure control valve

Click to expand...

If there's a rail pressure control valve code, then that points to the rail pressure control valve being faulty, or it's wiring is at fault. It's bolted to the end of the high pressure fuel pump, and can be changed without removing the HP pump.

Bigboy04 said:

Mechanic says he's best bet is to remove high pressure fuel pump and recondition it.

Click to expand...

HP pump failure isn't common, except for fuel leaks from it.

Only fit a reconditioned HP pump if it's leaking, or you've eliminated all other possible components first, like the HP regulator.

Bigboy04 said:

Could it be the high pressure fuel pump ?
fuel pressure sensor?

Click to expand...

It's unlikely to be the HP pump.

You can check the rail sensor for corrosion, but go with checking what the code listing as a starting point.

I had exactly the same issue a couple of weeks ago after emptying a bottle of Redex DPF cleaning additive to half a tank of diesel. Everything was fine for about 100 miles then it started refusing to fire up when the engine was hot. I thought maybe the Redex had cleaned out so much gunk that it had blocked the fuel filter so I replaced the filter and I've had no trouble since.